hg: jdk/client: 8191639: NPE from BasicListUI.Actions.getNextPageIndex

[prasanta.sadhukhan at oracle.com]

Changeset: 34f0232538f6
Author:    psadhukhan
Date:      2017-12-08 10:03 +0530
URL:       http://hg.openjdk.java.net/jdk/client/rev/34f0232538f6

8191639: NPE from BasicListUI.Actions.getNextPageIndex
Reviewed-by: serb, ssadetsky

! src/java.desktop/share/classes/javax/swing/plaf/basic/BasicListUI.java
+ test/jdk/javax/swing/JList/BasicListTest.java